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Material response, localization and failure of an aluminum alloy under combined shear and tension: Part II analysis

https://doi.org/10.1016/j.ijplas.2019.04.002

Chen, Kelin; Scales, Martin; Kyriakides, Stelios (September 2019, International Journal of Plasticity)

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Material response, localization, and failure of an aluminum alloy under combined shear and tension: Part I experiments

https://doi.org/10.1016/j.ijplas.2019.04.004

Scales, Martin; Chen, Kelin; Kyriakides, Stelios (September 2019, International Journal of Plasticity)

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Effect of Material Frame Rotation on the Hardening of an Anisotropic Material in Simple Shear Tests

https://doi.org/10.1115/1.4041320

Chen, Kelin; Kyriakides, Stelios; Scales, Martin (December 2018, Journal of Applied Mechanics)

The shear stress–strain response of an aluminum alloy is measured to a shear strain of the order of one using a pure torsion experiment on a thin-walled tube. The material exhibits plastic anisotropy that is established through a separate set of biaxial experiments on the same tube stock. The results are used to calibrate Hill's quadratic anisotropic yield function. It is shown that because in simple shear the material axes rotate during deformation, this anisotropy progressively reduces the material tangent modulus. A parametric study demonstrates that the stress–strain response extracted from a simple shear test can be influenced significantly by the anisotropy parameters. It is thus concluded that the material axes rotation inherent to simple shear tests must be included in the analysis of such experiments when the material exhibits anisotropy.
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Material hardening of a high ductility aluminum alloy from a bulge test

https://doi.org/10.1016/j.ijmecsci.2018.02.002

Chen, Kelin; Scales, Martin; Kyriakides, Stelios (April 2018, International Journal of Mechanical Sciences)

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Ductile failure of aluminum alloy tubes under combined torsion and tension

https://doi.org/10.1016/j.ijsolstr.2016.07.038

Scales, Martin; Tardif, Nicolas; Kyriakides, Stelios (October 2016, International Journal of Solids and Structures)

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